Bandswitch wafers for Yeasu FL-2100z

Discussion in 'Radio Circuits, Repair & Performance' started by ON5HB, Jun 7, 2017.

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  1. ON5HB

    ON5HB Ham Member QRZ Page

    Hi there,

    Does anyone know where to buy a set of new wafers for the Yeasu FL-2100z (bands 10-160m)?
    I have searched everywhere but am unable to find a replacement set.

    I need them to replace the S7 a/b rotary contacts.
    It's 12 hole wafer with 9 positions and 3 decks.

    I have seen several manufactures but they all seem to have just 1 or 2 contact going round.
    Where I need 3 contacts going round.

    I'm no expert in repairing these switches nor do I have a clue what to order to repair them.

    Any help out there getting them would be most welcome.


    Bas - ON5HB.
  2. W9GB

    W9GB Ham Member QRZ Page

    The Yaesu FL-2100 HF Amplifier series (1970s) is now 40 to 50 years old.
    Off-shelf parts, unless specifically provided by a hobbyist or amplifier restorer, unlikely.

    Open frame rotary switch usage has decreased since the 1980s with miniaturization and digital controls. There has been significant "consolidation" (mergers, buy-outs, closed business) of switch manufacturers since late 1980s.

    Fox Tango has a specific web page dedicated to Yaesu FL-2100 HF amplifiers. Amplifier Evolution.htm

    Yaesu released the CA:128 service bulletin in 1977 about band switch issues. in the hole.jpg

    While Yaesu likely used an OEM Japanese supplier for its rotary wafer switches ---
    that original Asian mfg. likely no longer makes the part.

    Electro Switch, Raleigh, NC is one of largest US mfg. of rotary switches (and wafers).
    They bought out a large number of USA rotary switch mfg. (many originally based in Chicago)
    in the late 1980s and early 1990s.
    Last edited: Jun 7, 2017
    K8AI likes this.
  3. W9GB

    W9GB Ham Member QRZ Page

    Duplicate - Deleted
  4. ON5HB

    ON5HB Ham Member QRZ Page

    Sorry I have seen all of that, also I checked out the electro-nc website and wrote them a letter.
    No response.

    You do not help me, I want to know what and where to order so I can repair it.
    All those pages do not help me or others.

    Many people have the same problem.
    Who makes this and what do we need to order to repair it? That is the question.
    What do we need to repair these switches?
  5. W9GB

    W9GB Ham Member QRZ Page

    Bas -

    "Off-Shelf" repair parts for 50 year old radios RARE -- "Boatanchors").
    For DIY restorations, requires PATIENCE in parts research and sometimes fabrication.
    Original Part was made in Japan for Yaesu.
    Contact Yaesu Musen - Japan

    Many of those Yaesu OEM electrical part subcontractors were located in the Fukushima prefecture (facilities and some companies -- gone in 2011).ōhoku_earthquake_and_tsunami

    The UK part strippers (eBay) my be you best chance to find an "original part".
    eBay seller names:
    radio_parts_england (Lancashire, UK)
    hifissb (MK)

    The other option, contact Lou, W1QJ at King Conversions.
    He may have the Yaesu part removed from an earlier 6 meter conversion
    Last edited: Jun 8, 2017
  6. WA7PRC

    WA7PRC Ham Member QRZ Page

    ^ ^ ^ THIS ^ ^ ^
    Lou @W1QJ is the first source that comes to mind.

    The OP should also consider that not everyone reads QRZ forums, and the best return may come from posting to one or more email reflectors such as...
  7. ON5HB

    ON5HB Ham Member QRZ Page

    I have emailed Lou.
    Fingers crossed.

    I did contact Yeasu, they don't care it's broken as it's too old they replied.
  8. K9AXN

    K9AXN Premium Subscriber QRZ Page


    Is the problem with S7-a?

    Regards Jim
  9. WA7PRC

    WA7PRC Ham Member QRZ Page

    Multi-Tech Industries offers a replacement bandswitch (Model 80) for the FL2100 series amplifiers (link). It ain't inexpensive but, they say it is a permanent fix. I also found this on ebay:
  10. W9GB

    W9GB Ham Member QRZ Page

    I did not list this option,
    because Multi-Tech only lists support for the Yaesu FL-2100 , FL-2100B , FL-2100F amplifiers.
    The Yaesu FL-2100Z (last version in series) changed switch layout.

    Bas can contact them, regarding a custom solution.
    IF there are multiple EU buyers (as he asserts), THEN this reduces that setup/design charge (€).

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